Human ortholog(s) of this gene implicated in breast carcinoma; esophageal cancer; esophagus squamous cell carcinoma; and squamous cell carcinoma. Orthologous to human LZTS1 (leucine zipper tumor suppressor 1); LZTS2 (leucine zipper tumor suppressor 2); and LZTS3 (leucine zipper tumor suppressor family member 3).